🔍 Port Scanner
Scan open ports on any public IP or domain using a simple online Nmap-based tool.
Scanning ports... Please wait
Scan Results
| Port | Protocol | Status | Service |
|---|
🔍 What this tool does?
Port Scanner is a free online tool that lets you check open ports on any IP address or domain. It helps you identify active services and potential vulnerabilities by scanning common and custom ports using simulated Nmap functionality.
⭐ Key Features
Fast port scanning simulation
Quick and efficient scanning process
Quick and efficient scanning process
Multiple scan types
Quick, Common, and Full scan options
Quick, Common, and Full scan options
Easy-to-read results
Clear status indicators and service identification
Clear status indicators and service identification
No data stored
Your scans are private and not logged
Your scans are private and not logged
Mobile-friendly
Responsive layout works on all devices
Responsive layout works on all devices
Copy scan report
Export results for documentation
Export results for documentation
⚙️ How to use?
- Enter an IP address or domain name
- Choose a scan type (optional)
- Click Start Scan
- View the scanned ports and their statuses
- Optionally copy or reset the results
💡 Creative Use Cases
Security auditing for personal or corporate servers
Testing firewall and network visibility
IT training tools
Educational purposes in cybersecurity classes
Pre-deployment checks for public services
✨ Tool Description
Port Scanner is a free web-based tool that allows you to simulate scanning of open TCP/UDP ports on a target IP or domain. Perfect for security testing, network analysis, and vulnerability checks.
❓ FAQs
What is port scanning?
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Port scanning is a technique used to discover open ports and services on a network host. It helps identify which services are running and potentially accessible on a target system.
Is this tool legal to use?
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This tool should only be used on systems you own or have explicit permission to test. Unauthorized port scanning may violate terms of service or local laws.
What's the difference between scan types?
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Quick Scan checks the most common ports (1-1000), Common Ports scans well-known service ports, and Full Scan checks a comprehensive range of ports (1-65535).
Why do some ports show as "filtered"?
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Filtered ports indicate that a firewall or other network filtering device is blocking access to the port, making it impossible to determine if the port is open or closed.
Can I scan internal/private IP addresses?
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This web-based tool is designed for public IP addresses and domains. For internal network scanning, you would need to use local tools like Nmap directly on your network.
How accurate are the results?
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This tool provides simulated results for demonstration purposes. For actual security testing, use professional tools like Nmap, Masscan, or commercial vulnerability scanners.